Automobile headlight



April 17, 192s.

R. B. STIERT AUTOMOBILE HEADLIGHT Filed Deo. 27.. 192e INVENTOR RS775/'e7- BY c ATTORNEYS Patented Apr. 17, 1928. 4

-uij'rao STATES.

nALPH-Bnaimnnsrmnr, or sArULrA, OKLAHOMA.

AUroMonILE HEAnLreHr.l

' Application led December 27, 19126. ASerial No. 157,296.

A further object is to provide a headlight in whichV the light is soprojected that it -is of a non-glaring quality, thereby making itunnecessary to dim the light when passmg approaching vehicles.

A further obj lt is to provide a headlight in which novel means isemployed for adjustin the reflection of .the light to any desire angle.i f* Other objects and advantages will appear inthe followingspecification, and the novel features of the invention will beparticularly pointed out in the 'appended claims.

My invention is illustrated in the accompanying drawings, forming partof this application, in which j ,Y y

Figure 1 is a front elevation of my device,

Figure 2 is a sectional view along the line 2-2 of Figure 1,

Figure 3 is a sectional view along the line 33 of Fi re 2,

Figure 4 1s a sectional view along the line 4--4 of Figure 2,

Figure 5 is a detail view taken along the line 5-5 of Figure 2, and.

Figure 6 is a detall vlew along the line 6-6 of Figure 2.

In carrying out my invention, I make 'use of metal outer casing 1 havinga removable cover portion 2, and a slantin front end 2.

The cover portion 2 is secure to the casing 1 by means of suitablespring members 3'. The casing 1 is secured to the frame of the carbymeans of a base 4. Thebase 4, as will be noted from Figure 2, isprovided with a convex bottom 5 having a relatively large opening 6therein. A washer 7 having the same curvature as the bottom 5 is placedunderneath the bottom 5 and adjacent the frame of the car. A similarwasher 8 is placed upon the top surface of the bottom 5. A bolt 9whichis secured to the frame of the car extends through the washers 7and 8. The relatively large opening 6 inthe bottom of the base permitsthe headlight to be ad .in a certain portion o justed to any desiredangle with 4respect to the-car. One side of the base'4 is providedFFECE.' y

with an opening 10 so that a nut 11 on one I end of the bolt 9 can bereached. In tightening the nut 11 the bottom 45 of the casing 4 isfirmly retained between the washers 7 and 8.

pair of reflectors 12 and 13 is mounted withm the casing 1. 'The reector12 is parabolic in cross section, as shown in Figure 2, and thereforehas the property of projecting .light to a relatively long distance.ahead of the vehicle. AAn incandescent electric bulb 14 is mounted inthe reflector 12. The reflector 12 is supported within the casing 1 bymeansof a crossbar 15 which extends fromv side to side of the casing 1.

'.1he crossbar is provided with a bolt 16 havmg a nut 17 on one end anda ball bearing 18 on the other end. The ball 18 is retained by a socket19 in one end of a supporting member' 2O which is secured to thereflector 12. It will therefore be seen that the reflector.12 can beadjusted to any required an le.

The re ector 13, as will be seen from Figure 2, is of a relativelyshallow type and ispositioned near the front of the casing 1.

-The reflector 13 is -supported by a ball and socket connection of thesame construction as that used in supporting the reflector 12,

and therefore requires'no detailed descripi tion. The reflector y13 isalso provided with an incandescent electric bulb 21. Both 'of the bulbs14 and 21 are connected by means of conductor wires 22 to a storagebattery,`

not shown, such asis usually carried in motor vehicles.

Looking now at Figure 3 it will be seen thatl two sides of the reflector13- are vcut away, thereby forming fiat surfaces 23,

whose purpose will be explained later. The' reflector 13 is furtherprovided with an opening 24in the top for the urpose of permitting alcertain amount o light to pass out and into the interior of. the casing1..

' An inner metal casin the casing 1. The interior surface of the innercasing is provided l with a coating of material for re- 25 is disposedwithe liecting light .suoli as nickel or silver plate.

The innericasing 25 fits snugl within `the outer casing 1 and is securemeans of rivets 26, or other suitable fastening means. The rear end. 26.of the inner casing is provided with an `opening 27 v thereto-by asshownin Figure 6.l The purpose of this corrugated surface is to causethe lightwhich is reflected therefrom to be spread out andV projected ina 4 flat beam below the range of vision of the driver of the oncomingcar.

A portion of the inner casing is tapered as shown inFigures 3 and 4..Lines 28 and 29 in Figure 2 indicate the extent of this taperedportion. It has been found that a better distribution of light and lessglare is obtained yby the use of this tapered port-ion.

A deflcctor 30 is disposed within the casing 25. As shown in Figures 4and' 5, the ed es of the deflector 30 are bent upwardly anA pivotallysecured to the inner casing 25 by means of rivets 31. The deflector ismadel from'material such as that used in the inner casing 25 and is.also provided with a coating for reflecting light. The deflectQr isfurtlrer .provided with corrugations similar to those in the top portionof the inner casing 5. Dotted lines 32 in Figure 2 indicate the flatbeam of light reflected from the deflector 30,

`while dotted lines 33 indicate the flat beam of light reflected'fromthe corrugated portion o the inner casing. l

Referring now to Figure 2, it will be observed that the deflector 30 isprovided with a bent back portion 34. A coil spring 35 is disposedbetween the portion 34 and the inner casing 25. A bolt 36 is disposedwith' in the spring 35 and extends through the in,- ner casing 25. Theother end is threaded and screws into a threaded opening in thedeflector 30.l The deflector 30 may be adjusted to different angles bymeans of the -horizontalfflutings as indicated generally at 39. Thatportion ofthe glass between the vletters z-a is clear so as to offer aslittle resistance as possible to the light reflected from the deflector30 and t-he corrugated top portion of the inner casing 25. v

A colored lass 40 isdisposed on.one side of the head-light. The colormay be ofa'ny desired shade. This glass is exposed to the reflectedlight from the reflector 12 and also the lightr assing out through theopening 24 in the re ector 13.v This'side glass provides a convenientmeans for indicating the direction in which cars are traveling,especially at street intersections, and also gwes some indication of thespeed at -which such cars are traveling -the reflector 12 ina conicalbeam.

noemer From the foregoing description of the va-` r1ous parts of thedevice, the operation thereof maybe readily understood. My headlight isdesigned to be used in pairsand is positioncdon the car in the samemanner as the ordinary type of light. Switches are vided for1lluminating the bulbs 14 an 21 separately or simultaneously. Whiledriving Vin the country it is intended that both bulbs shall beilluminated. Light which is projected from the bulb 14 is reflected fromAs will be seen from Figure 2, the reflector 12 is. disposed at such anangle as to reflect the light upwardly against the deflector 30A and thetop portion of the inner casing 25. The

light which strikes the corrugated deflector 30 is reflected forwardlyin a flat beam, as indicated by dotted lines 33 in Figure 2, and thelight which strikes the` corrugated top portion of the inner casing isreflected in a flat beam as indicated by dotted lines 33 in Fi ure 2.The result is that a flat beam of lig t is projected far in advance ofthe car, and at the same time projected below the line of vision of thedriver of the approaching car. For I`this reason it is unnecessar to dimthe light when passing a-pproac ing cars, as there is no danger of thelight blinding the driver of the approaching car.

It will be observed that since the reflector 13 is of a shallow type thelight reflected therefrom will be projected in a broad beam, therebyilluminating lthe crown and sides of the road near the car. The frostedportion of the glass 38 which isl directely in front loo of thereflector 13 destroys all glare caused tor disposed between thereflector vand said glass front, said reflector being arranged toproject light to a. distance relatively near the `headlight, aninnercasing disposed within said casing, said inner casing havingcorrugations and arranged vto reflect light, a reflector disposed nearthe rear end of said first named casing and partially encased by `saidinner casing, said second named reflector having a source of lightdisposed in front thereof and arranged to project a beam of lightagainst said corrugations, whereby the beam of light is reflected to adistance relatively far from the car.

2. A headlight of the type desc'rbed,.com prising a casing having adetachable glass front., a reflector .disposed adjacent said glassfront, a source of light for said reflector disposed between thereflector and Said glass front, said reflector being arranged to projectlight to a distance relatively near the headlight, an inner casingdisposed within said first named casing and having corrugations arrangedto reflect light, a deflector having corrugations and pivotally mountedwithin said inner casing, a reflec tor disposed near the rear lend ofsaid de' flector and partially encased by said innel casing, said secondnamed reflector having a varranged to project light to a distancerelatively near the headlight, an inner casing disposed within saidcasmg, sald inner casing having corrugations and arranged to reflectlight, said inner casing being provided with tapered portions, adeflector having corrugations and pivotally mounted within the innercasing, `and a reflector disposed near one end of said deflector andpartly encased by said inner casing, said second named reflector havinga source of light disposed in front thereof and arranged to project abeam of light against said deflector and said inner casing, whereby abeam of light is projected in a flat beam to a dis-A tance relativelyfar from the headlight.

4. A headlight comprising a casing having a glass front, a reflectordisposed adjacent said glass front, a source of light for sai-dreflector disposed between the reflector and said glass front, saidreflector being arranged to project light to a distance relatively nearthe headlight, an inner casing disposed within said casing, said innercasing having corrugations and arranged to reflect light, said innercasing being provided with tapered portions, a deflector havingcorrugations and -pivotally mounted within the inner casing,` areflector disposed near one end of said deflector and partly encased bysaid inner casing, said second named reflector having a source of 1i htdisposed in front thereof and arrange to project a beam of light againstsaid deflectpr and said inner casing, whereby a beam 'of light isprojected in a flat beam to a'distance relatively far from theheadlight, and 'a Window disposed on one side of saidheadlight andarranged to permit a beam of light to pass therethrough.

RALPH BERNARD STIERT.

